Quick detachable brake lining



Dec. 6, 1938. L. s. HUNTER QUICK DETAQHABLE BRAKE LINING Filed March 14,i958 5w l' i Patented Dec. '6; 41938 UNITED STATES" PATENT OFFICE l Thisinvention relates to a `quick detachable brake lining.

Anobject of the invention is the construction of a brake shoe and abrake lining with dovetail interlocking means whereby a very simple andefiicient fastening means,.for the brake lining, is v provided, whicheliminates auxiliary units, such as pins, etc., for securing the brakelining on the brake shoe against accidental outward removal.

l0 Another object of the invention is the provision of a simpleandemcient locking means for'preventing accidental lateral) displacementoi the brake lining oft 'the brake shoe. AL still further object of theinvention isthe 16 novei construction of a brake shoe with a centralflange and with receiving elongated apertures in the body of the brakeshoe, at opposite sides of the central iiange, whereby novel fastening'`means is placed in`saidelongated apertures, and, 2i) engages the brakelining, for holding' said brake lining on the brake shoe againstaccidental lateral displacement.

With the foregoing and other objects in view, my invention comprisescertain novel constructions, combinations and 'arrangements'ot parts aswill be hereinafter fully described, illustrated in the accompanyingdrawing, and more Vparticularly pointed out in the appended claims.

In thedrawing: l Figure 1 is a view,v in side elevation, partly shown'insection, o! an apparatus constructed in accordance with the presentinvention,` while Figure 2 is a bottom plan view of the same. f Figure 3is an'enlarged, fragmentary, longitu-' dlnal sectionalview of theapparatus. Y

' vFigure 4 is a sectional view, taken on line 4 4, Iii'igureV 3, landlooking in the direction of `the arrows. y, Y.

FigureJ is a perspective view of one of the 40 sections of each springlocking device. n

' Figure 6 is a fragmentary. perspective view of the brake lining, showninverted.

Figure '1 isa fragmentary,- perspective view of the brake shoe. f

Figure 8 is a transverse sectional view of the\ brake shoe and brakelining, showing another embodiment of the locking device, while Eigure 9is a perspective view of this locking device. j IReferring to' thedrawing by numerals, in which the preferred embodiment is shown in Figs..1 to 5, l designates the brake shoe, comprising a body '2 with acentral, right angle posi-` tioned ilange 3. 'The body- 2. is provided`with a plurality of` inwardly-extending transversely positioneddovetail sockets 4. The exible, brake lining l is formed of suitablematerial', to enable it to ilt snugly upon body 2, and this brake liningis provided with integral depending vdovetail lugs s. These devenu lugss nu snugly .within 's the dovetail sockets l, thereby holding the brakelining on the brake shoe against accidental outward removal. It willtherefore be seen that .I have discovered a simple combination, in anirn-v proved brake shoe and brake lining device, l0 whereby I eliminateany auxiliary means, such as pins, for holding the brake lining on thebrake shoe' against outward removal. When the operator desires toassemble the brake lining on the brakeshoe, he causes the dovetail lugsto .16 register with the dovetail sockets, and then by a slidingmovement the brake lining is .placed in position on the body 2 of thebrake shoe, or vice versa when it is desired to remove the lining fromthe brake shoe. r

\ In each dovetail socket l there are two par-- allel elongatedapertures 1; these apertures are at opposite sides of the central iiange3 Figs. 4 and 8). Each dovetail lug 6. is provided in its bottom facewith a receiving socket I. '1111s 25 socket Bregisters with theelongated apertures 1 A spring `locking device is employed tofprevent.accidental removal, in a lateral direction, of the 1 brake lining olfthe brake shoe. This locking device comprises two sections preferablymade oi 30 spring material, such'las spring wire, and .each A sectioncomprises a body v9 having intermediate its ends an angle portion i0,and a U-shape portion Il on its outer end. 'I'he body l is placedlthrough an ,aperture i2, formed on the central ,36

flange I, near the dovetail socket l. 'I'he U-shape end Ilv iitslaroundthe outer' edge o! flange 3 (Fig. 4) with the inner end ot thebody 9 in the receiving socket l, thus an efficient spring lockingdevice is provided, at each dovetail socketan'd-w dovetail lug, forholding the lining l against accidental lateral displacement: The brakelining 5, being of nexible material, willgive-sufiiciently to allow thepositioning of the inner ends or the locking devices in the receivingsockets of 45' .the-dovetail lugs; Further, the positioning of thesections of this spring locking device is preferably -done, after thebrake lining 4 has been placedf upon the brake shoe, which positioningis'accomplishedv by -fthredingf the bodies l through Vi450 VaperturesIl, .and then springing the hooked or U-shape ends Il overthe edge offlange l. Y g

In Figures 8 and 9 there is shown another-ernl bodiment of thelocking-device, in which a ,v springy fiat piece of, metal is employed,and thiao Figure.

piece is formed intobody il provided' at its cenfer with a bridgeportion Il and a pair of transversely-positioned depending ribs Il; thisbridge Il andk ribs II form a W-shape structure for straddling thecentralfiange I, with the ribs i5 in the elongated apertures 1. There issumcient room between the dovetail lugs l-'and the bottom of thedovetail sockets 4 to allow forcing of the locking device into position,brake lining 5 yields, being formed `of exible material. The ends of thebody Il are bent inwardly as at Il, constituting end :langes on thedevice; these flanges Il bear against the side edges of the brake liningl, as clearly seen in rifherefore, it will be seen tening means includethe apertures Il. inthecentral aange I. contiguous to thc dovtailsockets lng. 1. Y

'lheendportionsotthebrakeshoeareofany standard construction. The brakeshoe` being chaoa'ed, however, in reference to the specific partshereinbeforedescribed, forthe application of my improvementthereto.

y I have 'described the preferred embodiespecialiy as the- Y that in thetwo em-l bodiments of the locking devices, for positively ments of myinvention and .illustrated the same in the accompanying drawing, certainminor changes or alterations may appear to one skilled in the art towhich this invention relates during the extensive manufacture of same,and I, therefore. reserve e right to make such changes or alterations asshall fairly fall within the scope of the appended claims.

What I claim is:

1. In a device of the class described, the combination of a brake shoeprovided with sockets. said brake shoe provided with ailange between theends of said sockets, fastening means in each socket and straddling saidiiange. a lining on said brake shoe, and said fastening meansengagingsaid lining.

2. In a device of the class described, the combination of a brake shoecomprising a fiat body provided with a central iiange, said bodyprovided with a plurality of sockets extending across said ange, eachsocket provided in its bottom with parallel elongated apertures atopposite sides of said flange, said flange provided with a receivingaperture contiguous to each socket, a` brake lining on said brake shoeand provided with lugs in'said sockets, each lug provided in its innerface with a receiving socket. a spring locking device comprising twosections, each section comprising a body provided intermediate its endswith an angle portion and with a vU-shape outer end, said angle portionin said receiving aperture of the aange and the U-shape end around theouter edge of said flange, and the inner end of each section of saidlocking device positioned in the receiving socket ofthe lug.

